Step 1: Understanding the Tools for Pottery Making.
In pottery making, tools like sponges, wire-ended tools, and molding tools are used to shape and smooth the clay. Welding, however, is not a typical tool or technique used in pottery making.
Step 2: Analysis of options.
- (1) Welding: Correct, welding is not used in pottery making.
- (2) Sponge: Incorrect, sponges are used to smooth and shape the clay.
- (3) Wire ended tool: Incorrect, wire-ended tools are used to trim and shape the clay.
- (4) Molding tool: Incorrect, molding tools are used to shape clay into specific forms.
Step 3: Conclusion.
Thus, the correct answer is (1) Welding.